Finding Katahdin Document Packets, Chapter 7, Section 2
Chapter 7, page 205-206.
In this 1854 contract, an unnamed worker agrees to build the frames and lay the planking of a ship for Samuel M. Knight, a shipbuilder of Falmouth.
The hull of a ship was built in three steps:
First, stretch the keel. The keel is the backbone of the ship and is made from a heavy piece of timber from which the rest of the ship can stem.
Second, build the frames, which act as the ship's skeleton.
Third, plank the frames to create the outside layer of wood, or skin, of the ship.